Volatile substance heater unit



FIG. 1 is a top, front and right side perspective view of a volatile substance heater unit showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof, the right side elevational view being a mirror image of that shown;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top, front and right side perspective view of a volatile substance heater unit showing a second embodiment of my new design;

FIG. 8 is a front elevational view of FIG. 7;

FIG. 9 is a rear elevational view of FIG. 7;

FIG. 10 is a left side elevational view of FIG. 7, the right side being a mirror image of that shown; and,

FIG. 11 is a top plan view of FIG. 7.

The bottom of the second embodiment is identical to that shown in FIG. 3. 

The ornamental design for a volatile substance heater unit as shown and described. 